AC/DC to Logic Interface
Optocouplers
Technical Data
HCPL-0370
HCPL-3700
HCPL-3760
Features
• Standard (HCPL-0370/3700)
and Low Input Current
(HCPL-3760) Versions
• AC or DC Input
• Programmable Sense Voltage
• Hysteresis
• Logic Compatible Output
• Thresholds Guaranteed over
Temperature
• Thresholds Independent of
LED Optical Parameters
• Recognized under UL 1577
and CSA Approved for
Dielectric Withstand Proof
Test Voltage of 3750 Vac, 1
Minute
Description
The HCPL-0370/3700 and
HCPL-3760 are voltage/current
threshold detection optocouplers.
The HCPL-3760 is a low-current
version of the HCPL-0370/3700.
To obtain lower current
operation, the HCPL-3760 uses a
high-efficiency AlGaAs LED
which provides higher light
output at lower drive currents.
The devices utilize threshold
sensing input buffer ICs which
permit control of threshold levels
over a wide range of input
voltages with a single external
resistor.
HCPL-0370/3700/3760
The input buffer incorporates
several features: hysteresis for
extra noise immunity and
switching immunity, a diode
bridge for easy use with ac input
signals, and internal clamping
Functional Diagram
Applications
• Limit Switch Sensing
• Low Voltage Detector
• 5 V-240 V AC/DC Voltage
Sensing
• Relay Contact Monitor
• Relay Coil Voltage Monitor
• Current Sensing
• Microprocessor Interfacing
AC 1
8
V
CC
DC+ 2
7
NC
DC- 3
6
V
O
AC 4
5
GND
TRUTH TABLE
(POSITIVE LOGIC)
INPUT OUTPUT
L
H
H
L
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to
prevent damage and/or degradation which may be induced by ESD.
2
diodes to protect the buffer and
LED from a wide range of over-
voltage and over-current
transients. Because threshold
sensing is done prior to driving
the LED, variations in optical
coupling from the LED to the
detector will have no effect on the
threshold levels.
The HCPL-0370/3700's input
buffer IC has a nominal turn on
threshold of 2.5 mA (I
TH
+) and
3.7 volts (V
TH
+).
The buffer IC for the HCPL-3760
was redesigned to permit a lower
input current. The nominal turn
on threshold for the HCPL-3760
is 1.2 mA (I
TH
+) and 3.7 volts
(V
TH
+).
The high gain output stage
features an open collector output
providing both TTL compatible
saturation voltages and CMOS
compatible breakdown voltages.
By combining several unique
functions in a single package, the
user is provided with an ideal
component for industrial control
computer input boards and other
applications where a predeter-
mined input threshold level is
desirable.
Ordering Information
Specify Part Number followed by Option Number (if desired)
Example
HCPL-0370#XXXX
No option = SO8 Package.
500 = Tape/Reel Package Option (1 K min.).
XXXE = Lead Free Option.
HCPL-37x0#XXXX
020 = 5000 V rms/1 minute UL Rating Option.
300 = Gull Wing Surface Mount Option.
500 = Tape/Reel Package Option (1 K min.).
XXXE = Lead Free Option.
Option data sheets available. Contact your Agilent sales representative or authorized distributor for information.
Remarks: The notation “#” is used for existing products, while (new) products launched since 15th July 2001 and lead free option will use “–”
Schematic
3
Package Outline Drawings
Standard DIP Package (HCPL-3700/3760)
9.40 (0.370)
9.90 (0.390)
8
7
A XXXX
YYWW RU
PIN ONE
1.19 (0.047) MAX.
1
2
3
4
UL
RECOGNITION
6
5
TYPE NUMBER
DATE CODE
6.10 (0.240)
6.60 (0.260)
7.36 (0.290)
7.88 (0.310)
0.20 (0.008)
0.33 (0.013)
5° TYP.
1.78 (0.070) MAX.
3.56 ± 0.13
(0.140 ± 0.005)
4.70 (0.185) MAX.
1
2
AC
DC+
DC-
AC
V
CC
8
NC 7
V
O
6
GND 5
0.51 (0.020) MIN.
2.92 (0.115) MIN.
3
4
0.76 (0.030)
1.40 (0.056)
0.65 (0.025) MAX.
2.28 (0.090)
2.80 (0.110)
DIMENSIONS IN MILLIMETERS AND (INCHES).
NOTE: FLOATING LEAD PROTRUSION IS 0.25 mm (10 mils) MAX.
Gull Wing Surface Mount Option 300 (HCPL-3700/3760)
LAND PATTERN RECOMMENDATION
9.65 ± 0.25
(0.380 ± 0.010)
8
7
6
5
1.016 (0.040)
TYPE NUMBER
DATE CODE
A XXXX
YYWW RU
6.350 ± 0.25
(0.250 ± 0.010)
10.9 (0.430)
MOLDED
1
2
3
4
UL
RECOGNITION
1.27 (0.050)
2.0 (0.080)
1.19
(0.047)
MAX.
1.780
(0.070)
MAX.
9.65 ± 0.25
(0.380 ± 0.010)
7.62 ± 0.25
(0.300 ± 0.010)
0.20 (0.008)
0.33 (0.013)
3.56 ± 0.13
(0.140 ± 0.005)
1.080 ± 0.320
(0.043 ± 0.013)
2.540
(0.100)
BSC
0.635 ± 0.130
(0.025 ± 0.005)
0.635 ± 0.25
(0.025 ± 0.010)
12° NOM.
DIMENSIONS IN MILLIMETERS (INCHES).
TOLERANCES (UNLESS OTHERWISE SPECIFIED): xx.xx = 0.01
xx.xxx = 0.005
LEAD COPLANARITY
MAXIMUM: 0.102 (0.004)
NOTE: FLOATING LEAD PROTRUSION IS 0.25 mm (10 mils) MAX.
4
Package Outline Drawings, continued
Small Outline SO-8 Package (HCPL-0370)
LAND PATTERN RECOMMENDATION
8
7
6
5
3.937 ± 0.127
(0.155 ± 0.005)
XXX
YWW
5.994 ± 0.203
(0.236 ± 0.008)
TYPE NUMBER
(LAST 3 DIGITS)
DATE CODE
4
7.49 (0.295)
PIN ONE
1
0.406 ± 0.076
(0.016 ± 0.003)
2
3
1.9 (0.075)
1.270 BSC
(0.050)
0.64 (0.025)
*
5.080 ± 0.127
(0.200 ± 0.005)
7°
45° X
0.432
(0.017)
3.175 ± 0.127
(0.125 ± 0.005)
0 ~ 7°
1.524
(0.060)
0.203 ± 0.102
(0.008 ± 0.004)
0.228 ± 0.025
(0.009 ± 0.001)
*
TOTAL PACKAGE LENGTH (INCLUSIVE OF MOLD FLASH)
5.207 ± 0.254 (0.205 ± 0.010)
DIMENSIONS IN MILLIMETERS (INCHES).
LEAD COPLANARITY = 0.10 mm (0.004 INCHES) MAX.
0.305 MIN.
(0.012)
NOTE: FLOATING LEAD PROTRUSION IS 0.15 mm (6 mils) MAX.
5
Solder Reflow Thermal Profile
300
PREHEATING RATE 3°C + 1°C/–0.5°C/SEC.
REFLOW HEATING RATE 2.5°C ± 0.5°C/SEC.
PEAK
TEMP.
245°C
PEAK
TEMP.
240°C
PEAK
TEMP.
230°C
2.5°C ± 0.5°C/SEC.
160°C
150°C
140°C
3°C + 1°C/–0.5°C
30
SEC.
30
SEC.
SOLDERING
TIME
200°C
TEMPERATURE (°C)
200
100
PREHEATING TIME
150°C, 90 + 30 SEC.
50 SEC.
TIGHT
TYPICAL
LOOSE
ROOM
TEMPERATURE
0
0
50
100
150
200
250
TIME (SECONDS)
Recommended Pb-Free IR Profile
t
p
T
p
T
L
260 +0/-5 °C
217 °C
RAMP-UP
3 °C/SEC. MAX.
150 - 200 °C
RAMP-DOWN
6 °C/SEC. MAX.
TIME WITHIN 5 °C of ACTUAL
PEAK TEMPERATURE
20-40 SEC.
TEMPERATURE
T
smax
T
smin
t
s
PREHEAT
60 to 180 SEC.
25
t 25 °C to PEAK
TIME
t
L
60 to 150 SEC.
NOTES:
THE TIME FROM 25 °C to PEAK TEMPERATURE = 8 MINUTES MAX.
T
smax
= 200 °C, T
smin
= 150 °C
Regulatory Information
The HCPL-0370/3700/3760 has
been approved by the following
organizations:
UL
Recognized under UL 1577,
component recognition program,
File E55361 (HCPL-0370
pending).
CSA
Approved under CSA Component
Acceptance Notice #5, File CA
88324.
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